Cobra™ Medium Drain Cleaning Bladder 1.5" to 3" drains, P/N: SBP00332

This bladder requires a garden hose for operation. Quality rubber construction. Environmentally safe, uses no chemicals to clear clogs. How it works: Fill bladder with water, expands to fit snugly within drain pipe. Once inflated, accumulated water pressure is forced out of bladder against the clog; dislodges the debris and clears the drain.